In accordance with reference (a), development of sonar dome coating systems which will have good erosion resistance and anti-fouling properties and be able to withstand exposure to high level pulse fields generated by current high power sonar systems, is continuing at the U.S. Naval Applied Science Laboratory. As part of the overall program, preliminary evaluations are being made of commercially available coatings using the Ultrasonic Tank Test and the NASL Cavitating Disk Apparatus described in reference (b). Coatings selected on the basis of this Laboratory screening are applied to sections of sonar domes which are then exposed to high power sonar transmission at a U.S. Naval Underwater Sound Laboratory test site. This report covers a visit, reference (d), made by a Laboratory representative to inspect one such dome section which had been coated with two variations of a coating system containing a moisture cured, modified polyurethane material.